Selt -susl endlng ammonium rolyi iigsphat e suspension fertilizer

ABSTRACT

IN SHIPPING AND STORAGE COSTS BY USE OF 14-47-0 TO PRODUCE 11-37-0 AT THE DESTINATION POINT. A PROCESS FOR IMPROVING THE STORAGE CHARACTERISTICS OF AMMONIUM POLYPHOSPHATE CLAYLESS BASE SUSPENSION WHILE INCREASING THE GRADE UP TO 14-47-0 INVOLVES CAUSING FINE CRYSTALS OF AMMONIUM POLYPHOSPHATE TO BE FORMED IN THE FRESH SUSPENSION BY CLOSE CONTROL OF THE P2O5 (80-81 PERCENT) CONTENT OF THE SUPERPHOSPHORIC ACID FED THERETO AND QUICK COOLINGG THE PRODUCT VIA WATER COOLED HEAT EXCHANGE OR DIRECT CONTACTING IN A CHILLED FLUID IMMISCIBLE THEREWITH. WITH THIS LATTER COOLING METHOD, SPRAYING OF THE FERTILIZER INTO A SPECIALLY DESIGNED COOLING VESSEL RESULTS IN AN EFFICIENT COOLING TECHNIQUE. GOOD STROAGE PROPERTIES RESULT WITH FRESH 14-47-0 PRODUCTS HAVING ABOUT 80 PERCENT OF THE P2O5 IN POLYPHOSPHATE FORM. THE 14-47-0 CAN BE CONVERTED EASILY TO 11-37-0 CLEAR SOLUTIONS BY ADDITION OF WATER. AS 14-47-0 CONTAINS 27 PERCENT MORE PLANT NUTRIENT THAN 11-37-0, CONSIDERABLE SAVINGS RESULT

DEFENSIVE 'UEHCA'HN UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

I PUBLISHED DECEMBER l-l, 107i T893,009 SELF-SUSPENDING AMMONIUM POLYPHOS- PHATE SUSPENSION FERTILIZER Fred D. Nix, Rte. 3, Phil Campbell, Ala. 35581 Continuation-impart of application Ser. No. 836,386, June 25, 1969. This application Jan. 28, 1971, Ser. No. 110,537

Int. Cl. C01b 25/28; C05b 7/00 US. Cl. 71-34 4 Sheets Drawing. 34 Pages Specification A process for improving the storage characteristics of ammonium polyphosphate clayless base suspension While increasing the grade up to l4-470 involves causing fine crystals of ammonium polyphosphate to be formed in the fresh suspension by close control of the P 0 (80 81 percent) content of the superphosphoric acid fed thereto and quick cooling the product via water cooled heat exchange or direct contacting in a chilled fluid immiscible therewith. With this latter cooling method, spraying of the fertilizer into a specially designed cooling vessel results in an efficient cooling technique. Good storage properties result with fresh 14-47-0 products having about 80 percent of the P 0 in polyphosphate form. The 1447-() can be converted easily to 11-370 clear solutions by adon new cwtLemeo-lco'li sown-r. wizrmsm R E ACYOR CLAY llTO-I O'E) a: (om-loam HOLDING TANK enuuucr (mo-u 0.1% on.

PRODUCTION OF AMMONIUM POLYFHOSPHATE SUSPENSlONS COOLING BY DIRECT CONTACT WITH OIL dition of water. As 14-470 contains 27 percent more plant nutrient than 11-37-0, considerable savings result in shipping and storage costs by use of 14-47-0 to produce ll-370 at the destination point.

F. D. NIX Tgggfiw 315 111"SUSPHNDLNU AMMUNIUM L'ULYIHOSPHA'UI SUSPENSION FERTILIZER Dec. 14, 1971 4 Sheets-Shoot 2 Filed Jun. 28 1971 HOT SUSPENSION on. FROM CHILLER WARM OIL TO CHiLLER COOL PRODUCT SUSPENSION COOLER-SEPARATO VESSEL. FR PROUTEN SUSPENSION FERTELBZER WETH HREECT QONTACT OBL QOOUNG ifea/afl INVENTOR.

F. D. NIX Twmw SUIJF'SUJIENDLNG AMMONIUM POLYI'HOSPHATE SUSPENSION FERTILIZER Dec. 14, 11971 4 Sheets-Sheet 5 Filed Jun.

MMJOOQ JQQM INVENTOR.

z mm COOQTOm: @2168 moBfiE P30 mmhq 023000 306 5 -02 9S emoimoimmuzm i S 20254 mDOmQ IZ Dem 1971 F. D. NIX Twmm SELF-SUSPENDING AMMONIUM POLYPHOSPHATE SUSPENSION FERTILIZER Filed Jan. 28, 1971 4 Sheets-Sheet A HOT FLUID FROM REACTOR m COOLING OIL OIL TO COLLECTION VESSEL WIRE-BASKET y DISTRIBUTOR I (ATTACHED TO AGITATOR SHAFT) FLEXIBLE JOINT OIL-FERTILIZER INTERFACE COOLEO SUSPENSION FERTILIZER FERTILIZER A Q9 266?! INVENIUR.

.AjM A DUQTIIM 

